Fear is an emotion/reaction that we organisms of earth have used to our advantage in past circumstances. When our ancestors were confronted with a precarious situation, fear was a direct reaction to these possibly dangerous occurrences. This reaction could have been used to sense danger and alert others. Thus, making it important for people at the time. Nowadays, being cautious and aware of our surroundings is just as important if we want to remain out of possible harm and/or facing negative consequences of our actions. fear is a natural emotion that comes with this protection and awareness. Therefore, making it NOT foolish. BUT too much fear can have its own consequences, too. it just depends on how you look at it. :)
